JPS553822A - Activated sludge type water treatment apparatus - Google Patents

Activated sludge type water treatment apparatus

Info

Publication number
JPS553822A
JPS553822A JP7619278A JP7619278A JPS553822A JP S553822 A JPS553822 A JP S553822A JP 7619278 A JP7619278 A JP 7619278A JP 7619278 A JP7619278 A JP 7619278A JP S553822 A JPS553822 A JP S553822A
Authority
JP
Japan
Prior art keywords
sludge
time lag
return
return sludge
activated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP7619278A
Other languages
Japanese (ja)
Other versions
JPS645956B2 (en
Inventor
Koichi Horiuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7619278A priority Critical patent/JPS553822A/en
Publication of JPS553822A publication Critical patent/JPS553822A/en
Publication of JPS645956B2 publication Critical patent/JPS645956B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Activated Sludge Processes (AREA)

Abstract

PURPOSE: To completely prevent the impairing of treated water quality due to the time lag encountered in control system for return sludge by providing a means by which sludge is mechanically divided and activated at the return sludge leading-in portion in an activated sludge treatment tank.
CONSTITUTION: In case where the inflow of water to be treated from the inlet pipe 4 into the aeration tank 1 divided by the partition wall 2 is rapidly increased, the controller 11 sends out a command to increase the revolving number of the return sludge pump 9 according to the signal of the sludge densitometer 10, but a time lag is taken place until the amount of return sludge is increased. Thus, during the time lag, the means such as water pump, rotary stirrer, etc., is operated to divide the sludge and increase its specific surface area for mechanical activation, thus resulting in an effect similar to the augment of sludge concentration.
COPYRIGHT: (C)1980,JPO&Japio
JP7619278A 1978-06-22 1978-06-22 Activated sludge type water treatment apparatus Granted JPS553822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7619278A JPS553822A (en) 1978-06-22 1978-06-22 Activated sludge type water treatment apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7619278A JPS553822A (en) 1978-06-22 1978-06-22 Activated sludge type water treatment apparatus

Publications (2)

Publication Number Publication Date
JPS553822A true JPS553822A (en) 1980-01-11
JPS645956B2 JPS645956B2 (en) 1989-02-01

Family

ID=13598263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7619278A Granted JPS553822A (en) 1978-06-22 1978-06-22 Activated sludge type water treatment apparatus

Country Status (1)

Country Link
JP (1) JPS553822A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52144168A (en) * 1976-05-25 1977-12-01 Meidensha Electric Mfg Co Ltd Apparatus for controlling amount of air supply to aeration tank

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52144168A (en) * 1976-05-25 1977-12-01 Meidensha Electric Mfg Co Ltd Apparatus for controlling amount of air supply to aeration tank

Also Published As

Publication number Publication date
JPS645956B2 (en) 1989-02-01

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